Automatic leveling system for blast hole drills and the like
Automatic systems programmer
Digital fluid stepping motor
Fluid pressure operated rotary stepper actuator
Fluid-powered stepping motor
Hydraulic controller
Liquid contractility actuator
Methods and apparatus for controlling an hydraulic cylinder
Pneumatic stepping actuator positioner
Power transmission
Remotely operated fluid power control system for automotive vehi
Vehicle climate control apparatus
Vibratory drive mechanism